Perkins Coie's lawsuit is in response to President Trump's executive order that accused the firm of "dishonest and dangerous activity" that sought to overturn laws and elections and of allegedly discriminatory DEI policies.
It is the first legal hurdle thrown up to the Trump administration as it seeks to send thousands of migrants to a detention facility on the naval base near Cuba.
At the center of legal challenges against Trump's executive actions is whether he's telling federal agencies to violate a key legal standard established nearly 80 years ago.
The report on federal charges against Trump for election interference in 2020 offers special counsel Jack Smith a last chance to explain his decisions after dropping the case.